US sells 4-week bills at a high rate of 3.775%, B/C 2.81x; sells 8-week bills at a high rate of 3.845%, B/C 2.82x

Weekly 4- and 8-week bill auctions are among the most mechanical events on the US calendar, and their information content lies almost entirely in the relative, not absolute, numbers: the bid-to-cover against its recent run-rate, the size of the tail versus the when-issued, and the split between indirect and direct takedown. Both bills clearing at rates consistent with the prevailing front-end rate structure suggests demand is functioning normally, with bill yields tracking the expected path of policy rather than signaling stress. The case distinction that matters in bill supply is seasonal and structural: periods of heavy Treasury bill issuance after debt ceiling resolutions, or paydowns when cash balances fall, have historically driven bill rates away from the underlying rate corridor and widened the bill-OIS and bill-repo spreads, whereas routine weekly auctions like this one tend to pass without leaving a mark. Softer bid-to-covers or repeated tails at the very front of the curve have in past episodes preceded cheapening in repo and pressure on the secured-unsecured basis. What is worth watching is the trend across the weekly cycle of auctions and any divergence between bill rates and the corridor, rather than any single print.